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calcium    音标拼音: [k'ælsiəm]
n. 钙

钙

calcium
n 1: a white metallic element that burns with a brilliant light;
the fifth most abundant element in the earth's crust; an
important component of most plants and animals [synonym:
{calcium}, {Ca}, {atomic number 20}]

Calcium \Cal"ci*um\ (k[a^]l"s[i^]*[u^]m), n. [NL., from L. calx,
calcis, lime; cf F. calcium. See {Calx}.] (Chem.)
An elementary substance; a metal which combined with oxygen
forms lime. It is of a pale yellow color, tenacious, and
malleable. It is a member of the alkaline earth group of
elements. Atomic weight 40. Symbol Ca.
[1913 Webster]

Note: Calcium is widely and abundantly disseminated, as in
its compounds calcium carbonate or limestone, calcium
sulphate or gypsum, calcium fluoride or fluor spar,
calcium phosphate or apatite.
[1913 Webster]

{Calcium light}, an intense light produced by the
incandescence of a stick or ball of lime in the flame of a
combination of oxygen and hydrogen gases, or of oxygen and
coal gas; -- called also {Drummond light} and {lime
light}.
[1913 Webster PJC]

calcium
Symbol: Ca
Atomic number: 20
Atomic weight: 40.08
Soft grey metallic element belonging to group 2 of the periodic table.
Used a reducing agent in the extraction of thorium, zirconium and
uranium. Essential element for living organisms.

Calcium, NY -- U.S. Census Designated Place in New York
Population (2000): 3346
Housing Units (2000): 1134
Land area (2000): 5.586979 sq. miles (14.470208 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 5.586979 sq. miles (14.470208 sq. km)
FIPS code: 11671
Located within: New York (NY), FIPS 36
Location: 44.034761 N, 75.842114 W
ZIP Codes (1990): 13616
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Calcium, NY
Calcium

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  • Calcium: Benefits and How Much You Need - Cleveland Clinic Health . . .
    Calcium is an essential mineral that’s key to your bones and overall health It’s recommended that most adults consume at least 1,000 mg of calcium a day
  • Calcium - Wikipedia
    Calcium is a chemical element; it has symbol Ca and atomic number 20 As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air Its physical and chemical properties are most similar to its heavier homologues strontium and barium
  • Calcium and calcium supplements: Achieving the right balance
    Calcium is a mineral that is important for strong bones and a healthy body throughout your life A healthy diet is the best way to get the calcium you need But calcium supplements may be an option if you don't get enough from your diet
  • Calcium - Uses, Side Effects, and More - WebMD
    Calcium is an essential nutrient found in many foods, such as dairy products, canned sardines and salmon (with bones), and leafy greens The bones and teeth contain over 99% of all calcium in
  • Calcium - Consumer - Office of Dietary Supplements (ODS)
    Calcium is the most abundant mineral in the body Almost all calcium in the body is stored in bones and teeth, giving them structure and hardness Your body needs calcium for muscles to move and for nerves to carry messages between your brain and every part of your body
  • Calcium - MedlinePlus
    Your body needs calcium for many reasons Learn what foods are high in calcium and how much calcium you need in a healthy diet
  • Calcium | Definition, Properties, Compounds | Britannica
    calcium (Ca), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table It is the most abundant metallic element in the human body and the fifth most abundant element in Earth ’s crust
  • Calcium: Benefits, Uses, Side Effects, and More - Health
    Calcium is a mineral that's essential for bone health, found in yogurt, milk, spinach, and salmon Supplements can lower the risk of fractures





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